Can helmets stop bullets? Watch to find out.

Early on in your military career, you learn that the equipment you're issued is very cheaply made. The Kevlar helmets everyone gets are no exception. This invariably leads troops toward the same, common question: "Can this thing really stop a bullet?"

Dr. Matt Carriker, a veterinarian and YouTuber, had the same thought, and he decided to put the helmets to the test. Of course, the helmets our troops wear are thoroughly tested before being issued, but we have to wonder where they drew the line between cost efficiency and bulletproofing.

Now, we've all heard of cases where these helmets have saved lives of our troops in-country, so it's safe to say that the protective gear can stop 7.62x39mm bullets, but what about other rounds? That's exactly what Dr. Carriker decided to test.

Demolition Ranch is a YouTube channel that is, if nothing else, known for putting our favorite firearms through insane tests to see how they perform. He's even done a reliability test for a Hi-Point Model JCP. Now, if you know anything about firearms, then you know Hi-Point is notorious for their cheaply made firearms.

But he also does bulletproof tests to see how just about anything, including Legos, airplane windows, and even a solid bar of silver, stand up against firearms. In this test, he decided to examine how effective our standard issue helmets are at stopping rounds from lever-action rifles.

For the sake of thoroughness, Dr. Carriker uses an arsenal that spans of the gamut of calibers. His collection includes a .22 LR, .38 Special, .357 Magnum, .44 Magnum, .30-30 Winchester, and, finally, a .45-70 Xtreme Penetrator. He starts small and steps up to see exactly what deals some damage.

Of course, because this is Demolition Ranch we're talking about, he eventually moves on to test his AK-47 and Barrett M107A1 .50 BMG against these helmets. Why? Because, America and science!

Now, just to be clear, we know these helmets aren't designed to stop bullets entirely — they're mostly designed to protect your brain from shrapnel and keep your skull from smacking against hard surfaces. Even if they're not meant to bring bullet to a dead stop, wearing one is better than nothing, so be sure to put yours on and keep your watermelon intact!

Check out the video below to see helmets get put to the ultimate test!